Microwave switch driving device and high-power microwave switch

Abstract

The invention relates to the technical field of microwave switches, and discloses a microwave switch driving device and a high-power microwave switch, the driving device comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate which are sequentially arranged from bottom to top, and lower electromagnetic driving assemblies are mounted on the first mounting plate and the second mounting plate; electromagnetic driving assemblies are mounted on the third mounting plate and the fourth mounting plate; the movable iron core of the upper electromagnetic driving assembly pushes the movable iron core of the lower electromagnetic driving assembly to move downwards in the process of moving downwards; when the microwave switch channel is controlled, the driving device drives the movable iron core in the lower electromagnetic driving assembly to move downwards through the downward movement of the movable iron core of the upper electromagnetic driving assembly, so that compared with the existing driving device, the movement distance of the movable iron core is shortened, the electromagnetic force required by the movement of the movable iron core during starting can be reduced, and the reliability of the microwave switch channel is improved. Therefore, the starting current of the coil can be reduced, and the power consumption of the microwave switch adopting the driving device can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of microwave switches, and in particular to a microwave switch driving device and a high-power microwave switch. Background Art

[0002] In the channel switching process of the microwave switch, the electromagnetic coil assembly, i.e., the driving device, is often used to drive the RF reed to move up and down, so as to realize the channel shutoff control of the microwave switch. In addition, the existing electromagnetic coil assembly includes a yoke, a coil wound on the yoke, an iron core located on the yoke, and a guide rod located at the lower end of the iron core.

[0003] During the actual operation of the electromagnetic coil assembly, when the coil is energized, the iron core moves downward, thereby driving the guide rod to move downward, and then the RF reed moves downward, ultimately turning on the microwave switch channel.

[0004] The existing single-winding electromagnetic coil assembly of high-power microwave switches has the following problems in actual use:

[0005] First, in order to avoid the "breakdown" phenomenon of the microwave switch when transmitting high-power signals, the movement stroke of the RF reed needs to be increased. Therefore, the electromagnetic moving iron core that drives the RF reed to move up and down must have a larger travel range, that is, when the microwave switch is in the off state, the magnetic gap between the moving iron core and the static iron core is larger. When the opening force is constant, more power is required to drive the electromagnetic coil, resulting in high power consumption and high heat generation.

[0006] Secondly, during the switch closing process, the magnetic gap between the moving iron core and the static iron core decreases rapidly, while the driving power remains unchanged. The force increases over a large range, causing damage to the push rod and contacts of the switch, seriously affecting the service life of the microwave switch. Summary of the invention

[0007] In view of the shortcomings of the background technology, the present invention provides a microwave switch driving device and a high-power microwave switch. The technical problem to be solved is that the iron core in the existing microwave switch driving device has a long movement distance, and a large current needs to be passed to make the microwave switch channel conductive, resulting in high power consumption.

[0008] To solve the above technical problems, in a first aspect, the present invention provides the following technical solutions: a microwave switch driving device, comprising a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate arranged in sequence from bottom to top;

[0009] At least one lower electromagnetic drive assembly is mounted on the first mounting plate and the second mounting plate;

[0010] The third mounting plate and the fourth mounting plate are mounted with upper electromagnetic drive assemblies corresponding to each lower electromagnetic drive assembly;

[0011] The moving iron core of the upper electromagnetic drive assembly is arranged correspondingly to the moving iron core of the lower electromagnetic drive assembly up and down, and the moving iron core of the upper electromagnetic drive assembly pushes the moving iron core of the lower electromagnetic drive assembly to move downward during the downward movement.

[0012] In a certain embodiment of the first aspect, the top surface of the first mounting plate is provided with first lower fixing grooves having the same number as the lower electromagnetic drive assembly, the bottom surface of the second mounting plate is provided with first upper fixing grooves corresponding to each first lower fixing groove, and one first lower fixing groove and the corresponding first upper fixing groove are used to install one lower electromagnetic drive assembly;

[0013] The top surface of the third mounting plate is provided with second lower fixing grooves having the same number as the upper electromagnetic drive components, and the bottom surface of the fourth mounting plate is provided with second upper fixing grooves corresponding to each second lower fixing groove, and one second lower fixing groove and the corresponding second upper fixing groove are used to install an upper electromagnetic drive component.

[0014] In a certain embodiment of the first aspect, the lower electromagnetic drive component and the upper electromagnetic drive component respectively include a yoke, a coil, a moving iron core and a guide rod, the yoke is installed in the corresponding lower fixed groove and upper fixed groove, the coil is wound on the yoke, a guide hole is provided inside the yoke, the moving iron core is located in the guide hole, and the top of the moving iron core is T-shaped, and the width of the horizontal part of the top of the moving iron core is greater than the width of the guide hole; the bottom of the moving iron core is connected to the guide rod.

[0015] In a certain embodiment of the first aspect, the bottom of the moving iron core is conical.

[0016] In a certain embodiment of the first aspect, the first mounting plate and the second mounting plate, the second mounting plate and the third mounting plate, and the third mounting plate and the fourth mounting plate are respectively connected by support rods.

[0017] In a certain embodiment of the first aspect, two lower electromagnetic drive assemblies are installed on the first mounting plate and the second mounting plate; and two upper electromagnetic drive assemblies are installed on the third mounting plate and the fourth mounting plate.

[0018] In a second aspect, the present invention provides a high-power microwave switch, comprising the above-mentioned microwave switch driving device, and also comprising a base, wherein a microwave cavity is provided in the base, and connectors are respectively provided at the two ends and the middle position of the microwave cavity at the bottom of the base, and the three connectors divide the microwave cavity into two microwave switch channels, and a radio frequency reed is provided in each microwave switch channel, and each radio frequency reed is connected to a push rod passing through the top surface of the base; the two push rods are respectively connected to the guide rods of the two lower electromagnetic drive components.

[0019] In a certain embodiment of the second aspect, the coils on the lower electromagnetic drive assembly and the upper electromagnetic drive assembly are both single-winding coils, and the push rod is also covered with a spring, and the spring is located between the top end and the base of the push rod.

[0020] In a certain implementation manner of the second aspect, a mounting hole is opened upward on the bottom surface of the push rod, a push rod cap is installed in the mounting hole, and the push rod cap passes through the RF reed to fix the RF reed on the push rod.

[0021] In a certain embodiment of the second aspect, the mounting hole includes a first cavity, a second cavity and a third cavity from bottom to top, the widths of the first cavity and the third cavity are the same and larger than the width of the second cavity, and the portion of the push rod cap located in the mounting hole matches the mounting hole.

[0022] Compared with the prior art, the present invention has the following beneficial effects: when controlling the microwave switch channel, the driving device of the present invention is provided with an upper electromagnetic driving assembly and a lower electromagnetic driving assembly which are provided correspondingly up and down, and the moving iron core of the upper electromagnetic driving assembly moves downward to drive the moving iron core in the lower electromagnetic driving assembly to move downward. In this way, compared with the prior art driving device, the moving distance of the moving iron core is shortened, so that the electromagnetic force required for the moving iron core to move during startup can be reduced, thereby reducing the starting current of the coil, and further reducing the power consumption of the microwave switch using the driving device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an internal cross-sectional view of the driving device in the first embodiment;

[0024] Figure 2 It is a schematic diagram of the structure of the high-power microwave switch in the second embodiment;

[0025] Figure 3 is an internal cross-sectional view of the high-power microwave switch in the second embodiment;

[0026] Figure 4 is a schematic structural diagram of the push rod in the second embodiment;

[0027] Figure 5 Schematic diagram of the structure of the push rod, radio frequency reed and push rod cap in the embodiment. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation methods of a microwave switch driving device and a high-power microwave switch disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0029] It should be understood that, although the terms first, second, third, etc. may be used herein to describe various components or features, these components or features should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one feature from another feature. In addition, the terms or used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0030] Embodiment 1

[0031] A microwave switch driving device disclosed in this embodiment includes a first mounting plate 1 , a second mounting plate 2 , a third mounting plate 3 , a fourth mounting plate 4 , a lower electromagnetic driving assembly 5 and an upper electromagnetic driving assembly 6 .

[0032] The structure of the driving device in this embodiment is described as follows:

[0033] like Figure 1 As shown, the first mounting plate 1, the second mounting plate 2, the third mounting plate 3 and the fourth mounting plate 4 are arranged in sequence from bottom to top;

[0034] During actual installation, the first mounting plate 1 and the second mounting plate 2, the second mounting plate 2 and the third mounting plate 3, and the third mounting plate 3 and the fourth mounting plate 4 are connected respectively via support rods 11;

[0035] For example, from Figure 2 It can be seen that six support rods 11 are provided between the first mounting plate 1 and the second mounting plate 2, six support rods 11 are provided between the second mounting plate 2 and the third mounting plate 3, and six support rods are also provided between the third mounting plate 3 and the fourth mounting plate 4;

[0036] In addition, in this embodiment, at least one lower electromagnetic drive assembly 5 is installed on the first mounting plate 1 and the second mounting plate 2;

[0037] An upper electromagnetic drive assembly 6 corresponding to each lower electromagnetic drive assembly 5 is mounted on the third mounting plate 3 and the fourth mounting plate 4;

[0038] The moving iron core of the upper electromagnetic drive assembly 6 and the moving iron core of the lower electromagnetic drive assembly 5 are arranged in correspondence with each other up and down. During the downward movement of the moving iron core of the upper electromagnetic drive assembly 6, the moving iron core of the lower electromagnetic drive assembly 5 is pushed to move downward.

[0039] When controlling the microwave switch channel, the driving device of the present invention is provided with an upper electromagnetic driving component 6 and a lower electromagnetic driving component 5 which are correspondingly arranged above and below. The moving iron core of the upper electromagnetic driving component 6 moves downward to drive the moving iron core in the lower electromagnetic driving component 5 to move downward. Compared with the existing driving device, the movement distance of the moving iron core is shortened. In this way, the electromagnetic force required for the movement of the moving iron core can be reduced during startup, thereby reducing the starting current of the coil, and further reducing the power consumption of the microwave switch using the driving device of the present invention.

[0040] In this embodiment, the fixing method of the lower electromagnetic drive assembly 5 is as follows:

[0041] The top surface of the first mounting plate 1 is provided with the same number of first lower fixing grooves as the lower electromagnetic drive assembly 5, and the bottom surface of the second mounting plate 2 is provided with first upper fixing grooves corresponding to each first lower fixing groove. A first lower fixing groove and the corresponding first upper fixing groove are used to install a lower electromagnetic drive assembly 5, that is, the upper and lower ends of a lower electromagnetic drive assembly 5 are respectively clamped in a first upper fixing groove and a first lower fixing groove.

[0042] It should be noted that, although the first upper fixing groove and the first lower fixing groove are not marked in the drawings, the positions of the first upper fixing groove and the first lower fixing groove can be known according to the position of the lower electromagnetic drive assembly 5 .

[0043] In this embodiment, the upper electromagnetic drive assembly 6 is fixed as follows:

[0044] The top surface of the third mounting plate 3 is provided with second lower fixing grooves having the same number as the upper electromagnetic drive assembly 6, and the bottom surface of the fourth mounting plate 4 is provided with second upper fixing grooves corresponding to each second lower fixing groove. A second lower fixing groove and a corresponding second upper fixing groove are used to install an upper electromagnetic drive assembly 6, that is, the upper and lower ends of an upper electromagnetic drive assembly 6 are respectively clamped in a second upper fixing groove and a second lower fixing groove.

[0045] It should be noted that, although the second upper fixing groove and the second lower fixing groove are not marked in the drawings, the positions of the second upper fixing groove and the second lower fixing groove can be known based on the position of the upper electromagnetic drive assembly 6 .

[0046] The structures of the lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 6 in this embodiment are described as follows:

[0047] The lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 6 respectively include a yoke 7, a coil 9, a moving iron core 8 and a guide rod 10. The yoke 7 is installed in the corresponding lower fixed groove and upper fixed groove. The coil 9 is wound on the yoke 7. A guide hole is provided inside the yoke 7. The moving iron core 8 is located in the guide hole, and the top of the moving iron core 8 is T-shaped. The width of the horizontal part of the top of the moving iron core 8 is greater than the width of the guide hole; the bottom of the moving iron core 8 is connected to the guide rod 10.

[0048] More specifically, the top of the moving iron core 8 is a first cylinder and a second cylinder which are concentric circles from bottom to top, the diameter of the second cylinder is larger than the diameter of the first cylinder, and the first cylinder is located in the guide hole.

[0049] In some embodiments, the length of the yoke 7 of the lower electromagnetic drive assembly 5 and the length of the yoke 7 of the upper electromagnetic drive assembly 6 can be the same. In some embodiments, the length of the yoke 7 of the lower electromagnetic drive assembly 5 and the length of the yoke 7 of the upper electromagnetic drive assembly 6 can be different, specifically, the length of the yoke 7 of the lower electromagnetic drive assembly 5 can be greater than the length of the yoke 7 of the upper electromagnetic drive assembly 6, or the length of the yoke 7 of the lower electromagnetic drive assembly 5 can be less than the length of the yoke 7 of the upper electromagnetic drive assembly 6.

[0050] In addition, in this embodiment, in order to facilitate the starting of the moving iron core 8 and reduce the starting current, the bottom of the moving iron core 8 is in a conical shape.

[0051] In addition, in this embodiment, two lower electromagnetic drive components 5 are installed on the first mounting plate 1 and the second mounting plate 2 ; and two upper electromagnetic drive components 6 are installed on the third mounting plate 3 and the fourth mounting plate 4 .

[0052] Embodiment 2

[0053] like Figure 2 and 3 As shown, this embodiment provides a high-power microwave switch, including a microwave switch driving device in the first embodiment, wherein two lower electromagnetic driving components 5 are provided on the microwave switch driving device;

[0054] It also includes a base 12, in which a microwave cavity 13 is arranged, and connectors 14 are respectively arranged at the two ends and the middle position of the microwave cavity 13 at the bottom of the base 12. The three connectors 14 divide the microwave cavity 13 into two microwave switch channels, and each microwave switch channel is provided with a radio frequency reed 15, and each radio frequency reed 15 is connected to a push rod 16 passing through the top surface of the base 1; the two push rods 16 are respectively connected to the guide rods 10 of the two lower electromagnetic drive components 5.

[0055] In actual use, when the guide rod 10 of the lower electromagnetic drive assembly 5 drives the push rod 16 to move downward, the corresponding radio frequency reed 15 turns on the microwave switch channel below it.

[0056] Specifically, in this embodiment, the coils 9 on the lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 5 are both single-winding coils, and a spring 17 is also sleeved on the push rod 16, and the spring 17 is located between the top end of the push rod 16 and the base.

[0057] In actual use, by setting the spring 17, after the power supply on the coil 9 of the upper electromagnetic drive assembly 5 is removed, the elastic force of the spring 17 can move the RF spring 15 upward, thereby realizing the self-shutdown of the microwave switch channel.

[0058] Specifically, in the present embodiment, a mounting hole is opened upward on the bottom surface of the push rod 15 , in which a push rod cap 18 is installed. The push rod cap 18 passes through the RF reed to fix the RF reed 15 on the push rod 16 .

[0059] In addition, Figure 4 and 5 As shown, the mounting hole 16 includes a first cavity 160, a second cavity 161 and a third cavity 162 from bottom to top, the widths of the first cavity 160 and the third cavity 162 are the same and greater than the width of the second cavity 161, and the portion of the push rod cap 18 located in the mounting hole matches the mounting hole, that is, the portion of the push rod cap 18 located in the second cavity 161 and the third cavity 162 is a barbed knot structure, and such a design facilitates installation, and workers only need to insert the push rod cap 18 into the mounting hole 16 during installation.

[0060] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A microwave switch driving device, characterized in that: It comprises a first mounting plate (1), a second mounting plate (2), a third mounting plate (3) and a fourth mounting plate (4) which are arranged in sequence from bottom to top; At least one lower electromagnetic drive assembly (5) is mounted on the first mounting plate (1) and the second mounting plate (2); An upper electromagnetic drive assembly (6) corresponding to each lower electromagnetic drive assembly (5) is mounted on the third mounting plate (3) and the fourth mounting plate (4); The moving iron core of the upper electromagnetic drive component (5) and the moving iron core of the lower electromagnetic drive component (6) are arranged in correspondence with each other up and down, and the moving iron core of the upper electromagnetic drive component (6) pushes the moving iron core of the lower electromagnetic drive component (5) to move downward during its downward movement.

2. A microwave switch driving device according to claim 1, characterized in that: The top surface of the first mounting plate (1) is provided with first lower fixing grooves of the same number as the lower electromagnetic drive components (5), and the bottom surface of the second mounting plate (2) is provided with first upper fixing grooves corresponding to each first lower fixing groove, and one first lower fixing groove and the corresponding first upper fixing groove are used to install one lower electromagnetic drive component (5); The top surface of the third mounting plate (3) is provided with second lower fixing grooves having the same number as the upper electromagnetic drive components, and the bottom surface of the fourth mounting plate (4) is provided with second upper fixing grooves corresponding to each second lower fixing groove, and one second lower fixing groove and the corresponding second upper fixing groove are used to install one upper electromagnetic drive component (6).

3. A microwave switch driving device according to claim 2, characterized in that: The lower electromagnetic drive assembly (5) and the upper electromagnetic drive assembly (6) respectively comprise a yoke (7), a coil (9), a moving iron core (8) and a guide rod (10); the yoke (7) is installed in the corresponding lower fixed groove and upper fixed groove; the coil (9) is wound on the yoke (7); a guide hole is provided inside the yoke (7); the moving iron core (8) is located in the guide hole; the top of the moving iron core (8) is T-shaped; the width of the horizontal part of the top of the moving iron core (8) is greater than the width of the guide hole; and the bottom of the moving iron core (8) is connected to the guide rod (10).

4. A microwave switch driving device according to claim 3, characterized in that: The bottom of the moving iron core (8) is in a conical shape.

5. A microwave switch driving device according to claim 1, characterized in that: The first mounting plate (1) and the second mounting plate (2), the second mounting plate (2) and the third mounting plate (3), and the third mounting plate (3) and the fourth mounting plate (4) are respectively connected via support rods (11).

6. A microwave switch driving device according to any one of claims 2 to 5, characterized in that: Two lower electromagnetic drive components (5) are installed on the first mounting plate (1) and the second mounting plate (2); and two upper electromagnetic drive components (6) are installed on the third mounting plate (3) and the fourth mounting plate (4).

7. A high-power microwave switch, characterized in that: A microwave switch driving device comprising the device of claim 6, further comprising a base (12), wherein a microwave cavity (13) is arranged in the base (12), and connectors (14) are respectively arranged at the two ends and the middle position of the microwave cavity (13) at the bottom of the base (12), and the three connectors (14) divide the microwave cavity (13) into two microwave switch channels, and each microwave switch channel is provided with a radio frequency reed (15), and each radio frequency reed (15) is connected to a push rod (16) passing through the top surface of the base (12); the two push rods (16) are respectively connected to the guide rods (10) of the two lower electromagnetic drive components (5).

8. A high-power microwave switch according to claim 7, characterized in that: The coils (9) on the lower electromagnetic drive assembly (5) and the upper electromagnetic drive assembly (6) are both single-winding coils, and a spring (17) is also sleeved on the push rod (16), wherein the spring (17) is located between the top end of the push rod (16) and the base (12).

9. A high-power microwave switch according to claim 8, characterized in that: The bottom surface of the push rod (16) is provided with a mounting hole upward, and a push rod cap (18) is installed in the mounting hole. The push rod cap (18) passes through the radio frequency reed (15) to fix the radio frequency reed (15) on the push rod (16).

10. A high-power microwave switch according to claim 9, characterized in that: The mounting hole comprises a first cavity (160), a second cavity (161) and a third cavity (162) from bottom to top, the widths of the first cavity (160) and the third cavity (162) are the same and greater than the width of the second cavity (161), and the portion of the push rod cap (18) located in the mounting hole matches the mounting hole.

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